Improvement in the



w. DEARBORNf Making Rubber'Rol lers-for Co tton Gins. No. 68,052., Patented- Aug. 27. 1867.

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IMPROVEMENT IN THE CONSTRUCTION OF RUBBER ROLLERS FOR GOTTON-GINS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, WYMAN Disnnnoun, of Boston, in the county of Suffolk, and State ofMassachusetts, have invented a new and useful Improvement in Construction of Rubber Rollers; and I do hereby declarejthat the following is a full, clear, and exact description of the construction and operation of the same, reference being bad to the accompanying drawing, forming a part of this specification.

Rubber rollers are used for very many purposes they form a very important. part of wringing machines,

of some washing machines, of roller cotton-gins, of some ,paper machines, and are, in fact, a very common, we may almost say, staple commodity. But when constructed of solid rubber, vulcanized upon a spindle, they are difiicult and expensive to make, and are easily destroyed.

By my method of construction, however, I preserve the required elasticity, produce a roller more firm upon its spindle, save more than one-half the first cost, and have an article which can be repaired in any part of its length. In the driuving- V -Figure"1 represents the roll in process of construction.

Figure 2 is an elevation of, it when finished.

Figure 3 is a plan of. the clamping-plates.

Figure 4 is a plan of the metallic washer, and

Figure 5 is a plan of the elastic washer.

Like letters indicate like parts in all the figures.

I take a metallic spindle, a, cut in it a longitudinal groove, f, and arrange suitable arms or journals at the ends. I then attach to it firmly a hub or clamping-plate, 6, having stays orwires e fastened inxholes It, and extending up parallel with the spindle. I then prepare disks 0 of rubber, and d of sheet metal, each having a central hole with a tongue, z, projecting, and being pierced with small lateral'holes It. These disks 1 slip upon the spindle, sliding tongue 2' in groovef, and passing wires 0 through holes 72, cementing the rubber rings to each other or not, according to the use to-which the completed roll is to be put. These disks I place alternately, having a metallic disk between each two of rubber and when my roller is long enough, I compress the rubber and metal disks as tightly as possible together, and clamp by plate g, which may be screwed down or driven by u. key in a slot or other common device.

I am aware that John Oritcherson made in'1862 a rollof alternate disks of felt and metal, and that H. E. Smith, in 1866, made a corrugated roll of alternate disks of rubber and oloth, fixed by rigid washers on a shaft, and therefore I do not claim either of these devices; but I do claim- The washers oZ, fixed on spindle aand rotating with'it by tongue z fitting in groove f, arranged alternately with elastic disks c on said spindle, and clamped together to substantially form a solid roll by clamping-plates b and g, as shown, and further held by wires e parallel to said spindle, substantially as described.

WYMAN DEARBORN.

Witnesses:

'Inos. WM. CLARKE, CHAS. J. BATEMAN. 

